Cover for a musical instrument case



FIG. 1 is a top plan view of a cover for a musical instrument case showing our new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left end elevational view thereof; and

FIG. 5 is a right end elevational view thereof. 

The ornamental design for a cover for a musical instrument case, substantially as shown. 